John k



(ModeL) J K. ONEIL.

Horseshoe.

No. 236,353. Patented Jan. 4, I881.

luuentr ILPETERS. PHOTUUTHOGRAPHER. WASHINGTON. DJ,

ATENT Fries.

JOHN K. ONEIL, OF TROY, NEW YORK.

HMORSESHOE.

SPECIFICATION forming part of Letters Patent No. 236,353, dated January4, 1881.

Application filed April 8, 1880.

To all whom it may concern:

Be it known that I, JOHN K. ONEIL, of Troy, in the county of Rensselaerand State of New York, have invented an Improved Horseshoe 5 and I dohereby declare that the followingis afull and exact description thereof,reference being had to the accompanying drawings, making part of thisspecification Figure 1 being a view of the under side of the shoe withmy improvements; Fig. 2, a front view of the same; Fig. 3, a verticalsection in a plane indicated by the line 00 m, Fig. 1; Fig. 4, avertical section in a plane indicated by the line 3 y, Fig. 1; Fig. 5, apartial horizontal section in a plane indicated by the line z 2, Fig. 3.

Like letters designate corresponding parts in all the figures.

Let A represent the body of the horseshoe, B the front or toe calk, andO O the heel-calks.

The first feature of my invention consists in an improved means ofattaching the toe-calk to the body of the horseshoe, whereby security,strength, and durability are attained, and the calk can readily beremoved while the shoe remains on the horses foot for sharpening. and asreadily be reattached. A socket, D, is formed on the under side of thetoe of the s 106 to receive and inclose the shank a of the calk. Thesocket extends horizontally back from near the front edge of the shoe,being preferably, but not necessarily, narrowed or tapered from theentering end to the other, so that the shank of the calk, having thesame form, may wedge tightly into it, and the edges might be dovetail inform; but this is no part of my invention. The calk-shank is insertedfrom the front till the front of the calk is about flush with that ofthe body of the shoe. A part of the thickness of the socket is or may betaken from the thickness of the shoe-body, and, in fact, the undercovering-bar, b, of the socket maybe all taken from the thickness of theshoe-body, so that little or nothing is added to the weight of the shoein making the socket, and the bar of the socket projects as little aspossible from the under surface of the shoe. This construction alsoenables me to adopt my peculiar mode of fastening the toe-calk in thesocket, which is another feature of my invention, and is substantiallyas follows:

A cross-groove, c, is formed in the lower (Model) surface of the shankof the toe-calk, as. shown in Figs. 1 and 3, and side holes, d d, aremade into the socket to give entrance to a crosskey, E, for holding thecalk by resting in the groove 0. To retain this key securely in place itis made flexible, so that its ends will sink into depressions ff in thebody of the shoe, outside of and under the holes d d, and the lowersurface of the key is rounded or chamfered at the ends, or essentiallyonly at the rear entering end, as atg, Fig. 4, so that to withdraw thekey the end must be forcibly made to rise over the sloped end h of thedepression f. Anotch or catch, 2 may be formed in the upper surface ofthis projecting end of the key, to enable asuitable instrument to takehold of the key for withdrawing it. This construction, besides securelyholding the key in place, also sinks it within the under surface of theshoe-body, so that it will not be injured by striking anything or wornoff by abrasion.

The next feature of my invention consists in a peculiar form ofheel-calk, O, substantially as represented. The lower extremity iscomposed of two sharp edges, lm, crossing each other, with notches ordepressions between adjacent edges. This construction, while equallysharp, to hold from slipping, as a straightedged calk, furnishes agreater length of bearing-edge, to prevent too much indentation inpay'ements, ice, 850., also is equally effectual against slipping in alldirections, and it also enables the calk to be quickly and easilysharpened by filing in the notches.

The mode represented for securing the heelcalks in the body of the shoeis as follows: The shank n of the calk, whether round or square, issomewhat tapering, and it fits into a corresponding socket or holethrough or in the body of the shoe tightly by being a little too largefor the socket, so that it does not enter therein quite to the shoulderof the calk. Thus every step of the horse tends to tighten rather thanloosen the calk in place. Then a cross-groove, p, is made in thecalk-shank, as shown in Fig. 5, and a cross horizontal hole, 4', is madethrough the body of the shoe, coinciding with the cross-groove 12. Oneend, preferably the inner end, of this hole is extended laterally, as ats, and a nail or key having been driven from the other side of theshoe-body through the hole and in the crossgroove 12 of the calk tillthe inner end thereof projects through, say, a quarter of an inch, moreor less, then this end is clinched down into the groove or depression 3.The key or nail is preferably crosscut or otherwise roughened on thesides to obviateany tendency to work loose or out.

It may be here stated that my improved means of securing the toe-calk tothe shoe is not confined to the construction described of a completeinclosing-socket for holding the shank thereof, since it may onlypartially cover the under side of the same, with a good but not soperfect a result.

What I claim as my invention, and desire to secure by Letters Patent, is

1. The combination of the toe-calk B, provided with the shank a, and thehorizontal socket D of the shoe-body, substantially as and for thepurpose herein specified.

2. The combination of the key E with the socketed horseshoe-body A andtoe-calk B, the said hey being arranged to fit in holes 01 d in thesides of the socket D, in depressions ff of the body, and in across-groove, c, of the toe-calk, substantially as and for the purposeherein specified.

3. A heel-calk, 0, formed With cross-edges l m, substantially as and forthe purpose herein specified.

The above specification signed by me this 17th day of December, 1879.

JOHN K. ONEIL.

Witnesses HARRY LYoNs, D. W. CLINTON.

